This figure is impossible to determine for a number of reasons:
25 Million
Since unknown deaths are unknown, it is obvious that nobody knows how many there are.
In the years 2000-2007 tornadoes killed 24 people in Texas.
There have been 40 matador deaths in the bullring since the early 18th century. This does not include other toreros who participate in bullfights, only full matadors.
200,000,000,000
6
Since 2002 there have been over 7,000 deaths because of violent video games. (SUICIDE is the most COMMON CASE)
How Many Military Deaths Where There In World War Two ? :)
Since the opening of Splash Mountain, there has been 7 deaths as of March, 2007.
Since 2001, there have been approximately 7,000 American military deaths in conflicts primarily related to the wars in Iraq and Afghanistan. This figure includes both combat-related deaths and non-combat fatalities. The numbers can vary slightly depending on the source, but the estimate remains in that range.
there have been 12,000 deaths so far
Since 2000 there has been about 35 school shootings in the USA, not all of which resulted in victimised deaths. 4 of these incidents including 10 or more deaths. I hope you were referring to the US in this question.